Well my advice is keep heart! My Morgan came from a main dealer (no longer a Morgan dealer thank goodness) and broke down on the first run. Thankfully I found our local excellent dealer (Krazy Horse) who were able to sort out all the issues - and thankfully negotiated with the original dealer to have them pay for it.
I think that cars like Morgans make you realise how much we take for granted the robot-built tin cans that most of us use every day. My experience of taking on classics and Morgans is that it takes a bit of patience and time to get things sorted to my own satisfaction. And that even small and simple things can make big differences. Tyre pressures, suspension greasing, the state of suspension components etc etc need to be gone through methodically to monitor the improvement. And one day you will realise that it drives how you want it!
If I were in your position I would phone the supplying dealer (rather than email in the first instance) as soon as they are open and say what you have gone through, including how it makes you feel. And ask for help in sorting what seems to be a car in need of some TLC. Then back up with emails and stuff in writing.
